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Finding the Fourth Proportional to 516,751.20, 775,076.65 and 156,925.15

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Solution

The fourth proportional to 516,751.20, 775,076.65 and 156,925.15 is: 235,372.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,751.20 : 775,076.65 = 156,925.15 : x
  2. Step 2: Convert to fraction form
    516,751.20/775,076.65 = 156,925.15/x
  3. Step 3: Cross multiply
    516,751.20x = 775,076.65 × 156,925.15
  4. Step 4: Simplify right side
    516,751.20x = 121,629,019,562.75
  5. Step 5: Solve for x
    x = 121,629,019,562.75/516,751.20
  6. Step 6: Final answer
    x = 235,372.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.